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Here's an update on the three sets:
The Thorn B&W has been put aside while I wait for a package of capacitors to arrive in the mail.
The Korting is on the backburner until I have more information for it. I have been in contact with a fellow collector locally who believes he may have the schematic for it.
The Healing has been receiving all the attention these last few days as I nurse it back to life. I have had to make some PCB repairs to the colour decoder panel as the blue channel output transistor bore the brunt of a monitor falling against it at its previous home. I've also applied power to the chassis progressively with the heater string open to check the health of the capacitors. Surprisingly they have all passed in good condition and no leakage of voltage to the valve grids.
With things looking good, I spent an hour looking for an elusive PCL82 audio output valve to replace the missing one as well as the easier to find PL509 line output valve. With the heater string complete, power was applied via a 200w globe and after warming up I had sound and line whistle with no distress evident.
The next step was to apply power directly as these sets use 250w of power so again after hooking up meters to monitor the 300v and 24v supplies, power was applied.
Things were looking good with a healthy line whistle developing before SPLAT! A rather loud flashover occured. After killing the power and recovering, I reapplied power to narrow the source of the fireworks. Sure enough, after warming up a healthy set of arcs between the CRT anode connection and the nearby magnetic shield occurred.
So I'll be doing some remedial work around this area before trying again. Hopefully I'll be able to have some screenshots soon.
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